Nick Ross and Fiona Bruce show how viewers' calls have helped to crack difficult cases, some many years old.

Including: the young girl and her mother forced to flee home after vicious intimidation from the groomer they'd unmasked; the animal liberation fanatics who dug up a dead woman related to a guinea-pig rearing company they hated; and the serial rapist and child abuser first questioned on the day he was being interviewed for a prison governor's job. Show less